/Engine/Source/Runtime/Engine/Classes/Engine/AssetManager.h
Gets the list of all FSoftObjectPaths for a given type, returns true if any found
virtual bool GetPrimaryAssetPathList ( [FPrimaryAssetType](API\Runtime\CoreUObject\UObject\FPrimaryAssetType) PrimaryAssetType, [TArray](API\Runtime\Core\Containers\TArray)< [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) > & AssetPathList ) const